Author: Esteban Muller, J. F.     [Esteban Müller, J.F.]
Paper Title Page
MOPTS083 Beam Dynamics Simulation with an Updated Model for the ESS Ion Source and Low Energy Beam Transport 1042
 
  • E. Nilsson, M. Eshraqi, J.F. Esteban Müller, Y. Levinsen, N. Milas, R. Miyamoto
    ESS, Lund, Sweden
 
  Beam dynamics simulation of the ion source (IS) and low energy beam transport (LEBT) of the European Spallation Source (ESS) Linac is conducted with TraceWin and IBSimu code. TraceWin allows multi-particle tracking based on a particle-in-cell space-charge solver and is the standard simulation tool of the whole ESS Linac. IBSimu is based on a Vlasov solver and allows to simulate beam extraction from plasma as well as the beam transport in the LEBT. In preparation for beam commissioning of the IS and LEBT in the ESS Linac tunnel, which started in September 2018 and is ongoing as of the timing of writing this paper, the simulation models of the IS and LEBT in these two codes were updated. This paper reports the effort for these updates, including the beam distribution out of the IS, electromagnetic field map of the LEBT solenoid, more realistic aperture structure in the LEBT, as well as updated LEBT solenoids scan simulation.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPTS083  
About • paper received ※ 17 May 2019       paper accepted ※ 18 May 2019       issue date ※ 21 June 2019  
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MOPTS103 First Results of Beam Commissioning on the ESS Site for the Ion Source and Low Energy Beam Transport 1118
 
  • R. Miyamoto, R.E. Bebb, E.C. Bergman, B. Bertrand, H. Danared, C.S. Derrez, E.M. Donegani, M. Eshraqi, J.F. Esteban Müller, T. Fay, V. Grishin, B. Gålnander, S. Haghtalab, H. Hassanzadegan, A. Jansson, H. Kocevar, E. Laface, Y. Levinsen, M. Mansouri, C.A. Martins, J.P.S. Martins, N. Milas, M. Muñoz, E. Nilsson, D.C. Plostinar, C. Rosati, T.J. Shea, A.G. Sosa, R. Tarkeshian, L. Tchelidze, C.A. Thomas, P. L. van Velze
    ESS, Lund, Sweden
  • I. Bergstrom
    CERN, Meyrin, Switzerland
  • L. Celona, L. Neri
    INFN/LNS, Catania, Italy
 
  The European Spallation Source (ESS), currently under construction in Lund, Sweden, will be a spallation neutron source driven by a proton linac of an unprecedented 5 MW beam power. Such a high power requires its ion source (IS) to produce proton beam pulses at 14 Hz with a high peak current more than 62.5 mA and a long plateau up to §I{3}{ms}. The IS and the following low energy beam transport (LEBT) section were manufactured and tested with beam to meet ESS requirements at INFN-LNS and delivered to ESS towards the end of 2017. Beam commissioning of these two sections on the ESS site has started in September 2018 and will continue until the end of June 2019. This paper provides an overview on this first beam commissioning period at ESS and also presents results of IS characterization and testing on LEBT functionalities.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-MOPTS103  
About • paper received ※ 20 May 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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WEPTS038 New RFQ and Field Map Model for the ESS Linac Simulator 3181
 
  • J.F. Esteban Müller, E. Laface
    ESS, Lund, Sweden
 
  The Java ESS Linac Simulator (JELS) is an extension of the Open XAL online model that is a fundamental part of the accelerator control system. The model is used by high-level physics applications for commissioning, tuning, and machine development activities at the European Spallation Source (ESS). This paper summarizes the upgrades done to JELS during the last year. An RFQ model is under development. The RFQ was the only element of the linac missing in the online model. The electromagnetic field map model has been refactored to ease implementation of new elements (rf cavities and magnets), and to allow the superposition of more than one field map and other elements. Further improvements have also been done in the treatment of corrector magnets and space charge for continuous beam in the Low-Energy Beam Transport (LEBT). Finally, the machine description can now include arbitrary aperture definitions.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPTS038  
About • paper received ※ 14 May 2019       paper accepted ※ 22 May 2019       issue date ※ 21 June 2019  
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WEPTS096 Open XAL Status Report 2019 3341
 
  • A.P. Zhukov, C.K. Allen, A.P. Shishlo
    ORNL, Oak Ridge, Tennessee, USA
  • B.E. Bolling, J.F. Esteban Müller, E. Laface, Y. Levinsen, N. Milas, C. Rosati
    ESS, Lund, Sweden
  • C.P. Chu, Y. Li
    IHEP, Beijing, People’s Republic of China
  • T. Dodson
    University of Tennessee, Knoxville, USA
  • P. Gillette, P. Laurent, G. Normand, A. Savalle
    GANIL, Caen, France
  • M.T. Li, X.H. Lu, J. Peng
    IHEP CSNS, Guangdong Province, People’s Republic of China
 
  The Open XAL accelerator physics software platform is being developed through an international collaboration among several facilities since 2010. This paper discusses progress in beam dynamics simulation, new RF models, and updated application framework along with new generic accelerator physics applications. We present the current status of the project, a roadmap for continued development and an overview of the project status at each participating facility.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPTS096  
About • paper received ※ 15 May 2019       paper accepted ※ 23 May 2019       issue date ※ 21 June 2019  
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